We are sorry, but the QSC SC-424 4-Way Screen Channel Loudspeaker, Tri- or Quad-Amp has been discontinued by the manufacturer and is no longer available. This page is retained for reference only.
Please call us at 833-965-3722 for assistance finding a replacement product.
The QSC SC-424 4-Way Screen Channel Loudspeaker was developed for the demanding requirements of professional motion picture playback. Part of the QSC DCS Digital Cinema Speaker Series, this system supports selectable tri- or quad-amplified operation and consists of two main components: the MHV-1090 mid-high-very-high-frequency system and the LF-4215 low-frequency system.
The MHV-1090 features a horn-loaded 10-inch midrange driver and a coaxial neodymium high-frequency/very-high-frequency compression driver. It includes a driver protection network and a passive crossover for tri-amplified operation to help protect the high-frequency drivers from low-frequency signals.
The 10-inch midrange driver supports operation down to 250 Hz, while its phase-plug design allows crossover frequencies up to 1,700 Hz to the high-frequency horn. This design helps reproduce dialogue with clarity and intelligibility in cinema environments.
QSC SC-424 Features
- Four-Way Cinema Audio: Selectable tri- or quad-amplified screen-channel loudspeaker system.
- Advanced HF/VHF Driver: Coaxial compression-driver design intended to deliver extended high-frequency response, dynamic range, and reduced distortion.
- Reinforced Low-Frequency Enclosure: LF-4215 features heavily braced MDF construction.
- Clear Dialogue: Low-distortion waveguides support articulate dialogue reproduction.
- Installation-Friendly Design: The specified 20-inch enclosure depth helps accommodate cinema installation requirements.
QSC Certified Expertise
Knowledgeable Support for QSC Products
HDTV Supply has QSC Level 1 certified expertise. Our team has completed QSC Level 1 Training, demonstrating foundational knowledge of the QSC platform, including system design, hardware and software, programming, and troubleshooting.
This training helps us provide knowledgeable product guidance when customers are selecting and deploying Q-SYS solutions. When you purchase Q-SYS products from HDTV Supply, you are working with a team that understands the Q-SYS platform and can help you make informed product and system decisions.
Looking for an alternative? Contact HDTV Supply at 833-965-3722 for assistance finding a suitable cinema loudspeaker based on your system requirements.
Ask a Question About the QSC SC-424
The QSC SC-424 has been discontinued. Contact HDTV Supply for help identifying a replacement or for questions about the archived specifications on this page.
Phone: 833-WOLFPACK (833-965-3722)
Website: HDTV Supply
QSC SC-424 Specifications
Discontinued product — specifications are provided for reference only.
| Specification | SC-424 System | LF-4215 | MHV-1090 |
|---|---|---|---|
| Nominal Coverage | 90° horizontal × +20° to −30° vertical | ||
| Frequency Range (−6 dB) | 33 Hz–20 kHz | ||
| Active Crossover Frequencies | 250 Hz, 1,700 Hz, and 6,000 Hz; 24 dB/octave | ||
| Impedance | 4 Ω | MF: 8 Ω; HF: 8 Ω; VHF: 8 Ω | |
| Sensitivity (1 W/1 m, half space) | 99.5 dB | Tri-amp: MF 105 dB; HF/VHF 110 dB | Quad-amp: MF 105 dB; HF 110 dB; VHF 110 dB |
| Maximum Input Power | 800 W continuous, 8 hours, IEC 268 noise with 6 dB crest factor; 1,000 W continuous, 2 hours, AES pink noise with 6 dB crest factor | MF: 275 W continuous; HF/VHF: 200 W continuous | MF: 275 W continuous; HF: 100 W continuous; VHF: 100 W continuous |
| Recommended Amplifier Power | 1,600 W continuous maximum | MF: 800 W; HF: 500 W; VHF: 300 W continuous maximum | MF: 800 W; HF: 500 W; VHF: 300 W continuous maximum |
| Recommended Processing | Subsonic filter below 30 Hz, greater than 18 dB/octave | Fourth-order Linkwitz-Riley crossover at 250 Hz, 1,700 Hz, and 6,000 Hz using QSC processing | |
| Connectors | Barrier-strip screw terminals accepting up to #10 AWG stranded wire | ||
| Transducers | Two 15-inch (381 mm) high-efficiency extended-bass woofers with 4-inch copper voice coils | MF: 10-inch high-efficiency horn-loaded cone with phase plug; HF/VHF: coaxial neodymium compression driver with 3.5-inch HF diaphragm and 1.75-inch VHF diaphragm | |
| Enclosure | Quasi B4 alignment, ported; fully flared symmetrical ports; tuned to 36 Hz; heavily braced MDF; vandal-resistant woofer mounting bolts | Tilt/pan bracket; ±10° vertical tilt and ±10° horizontal pan | |
| Dimensions (H × W × D) | 36 × 30 × 20.3 in | 39 × 30 × 20 in | 39 × 30 × 20 in |
| Dimensions (H × W × D) | 762 × 910 × 516 mm, as supplied | 762 × 990 × 508 mm, as supplied | 762 × 990 × 508 mm, as supplied |
| Net Weight | 172 lb (78 kg) | 84 lb (38.5 kg) | 84 lb (38.5 kg) |
| System Weight | 256 lb (116 kg), as supplied | ||
| Baffle Cut-Out | 76 × 32 in, as supplied | ||
QSC SC-424 Manuals and Documentation
QSC SC-424 Specification Sheet (PDF)
This model is discontinued. Documentation links are provided for reference, subject to continued availability.
QSC SC-424 Frequently Asked Questions
QSC SC-424 Customer Reviews
This discontinued product page is retained for reference. Check this section for any available historical customer reviews. No ratings or testimonials are reproduced here because verified review data was not provided.
